class William::Carlos::Williams
  landscape_with_the_fall_of_icarus = T.let(new(<<~LANDSCAPE), Williams)
    According to Brueghel
    when Icarus fell
    it was spring

    a farmer was ploughing
    his field
    the whole pageantry

    of the year was
    awake tingling
    with itself

    sweating in the sun
    that melted
    the wings' wax

    unsignificantly
    off the coast
    there was

    a splash quite unnoticed
    this was
    Icarus drowning
  LANDSCAPE
end

optp
  .on do |value|
    <<~EOF
      There's some lines here

      But that one's a blank line!

      There shouldn't be any whitespace on those
    EOF
  end